Nozzle



Aug 15, 1933. R. P. PARADISE NOZZLE Filed Aug. 5, 1931 lnverd'm R ymondP Paradise,

Patented Aug. 15, 1933 1,922,259 SUE.)1 f l PATENT oFFIcE NOZZLEf Hltaymond P. Paradisalndiahapblis, Ind. Application August 5, 1931.Serial No. 555,272

3 Claims.

This invention relates to the art of nozzles or jets and particularly tothe opening therethrough. It is a primary purpose of my invention toprovide an orifice through which a flow of liquids is had to break upthe fiow whereby there is not a solid stream discharge but instead amore or less broken up discharge to havethe discharge flow in the formof small particles and not in a solid column.

It is a primary object of my invention to provide an orifice fittingwhich may be made very cheaply and which is of such conformation thatthe orifice therethrough is practically self cleaning and not subject tobeing clogged in ordi- '5- nary service.

These and other objects will become apparent in the followingdescription of the invention as illustrated by the accompanying drawing,in which Fig. 1 is a view inperspective of a short length Fig. 7, atopplan View of a lawn sprinkler head to which the invention is applied;

Fig. 8, a section on the line 8-8 in Fig. 7. Like characters ofreference indicate like parts throughout the several views in thedrawing.

Referring first to Figs. 1-6, '1'. form a cup 15 to have a bottom bulgedoutwardly to protrude, convexly. Through the bottom, I punch or broach ai hole 16 to have a plurality of straight sides whereby the sides meetto form angles spaced upwardly around the bottom at elevations above thecen ter thereof. The hole 16 is here shown as triangularly shaped, theessential feature-of the hole being that parts of the edges thereof beat various elevations as compared to other parts, and

this difference in elevation is here shown as being achieved by forminga non-circular hole through the curved bottom.

The cup 15 is pressed into openings in the pipe 17a few thousandths ofan inch less in diameter than the external diameter of the cup 15 tohave the cup retained by a pressed fit. It is to be noted that theconvex bottom of the cup is positioned toward the oncoming fluid. Whereit is not feasible or advisable to press the cup directly into the pipeoutlet, a screw fitting 18 is provided into which the cup 15 is pressed,Fig. 3, and the fitting 18 is screw-thre'adedly entered in the pipel'l.

The cup with its orifice may, of course, be formed integrally in thewall of the fluid conductor as, for example, in Figs. '7 and 8, wherethe cup 19 is pressed directly into the wall of the sprinkler head 20 toform a convex button projecting to within the head with the orifice cuttherethrough.

By positioning the orifice cup to have its convex end presented towardthe oncoming fiuid, and by forming the noncircular orifice in thisconvex end, parts of the orifice extend around the end away from thecenter. ".By reason of this structure, all of the fluid in a giventransverse plane through the oncoming fiuid does not pass through theorifice simultaneously. The central part escapes through the center ofthe orifice, while outlying portions in that plane have to travelfarther before finding an outlet in the corners of the orifice at higherelevations. In other words, part of the fiow is delayed as compared toanother part, and this action might be compared roughly 0 to the actionof light in passing through a prism where the light rays are bent andseparted to break the solid light stream up into individual smallerstreams. Also, the how is restricted by the shape of the hole itself tofurther the break- .35 ing. up of the stream;

In irrigation work, water discharging from the orifice as here shown anddescribed breaks up into minute particles, yet the water is thrown aconsiderable distance, in fact, as great a distance as is obtained bythe heretofore commonly employed circular orifice, with the resultthatthe ground is not washed nor compacted to dry out with a caked surface.7

A circular orifice of small diameter clogs very easily should particlesof dirt, rust, or the like be in the fluid. The orifice shaped as hereindescribed does not clog readily for the reason that at least one corneris left uncovered by the solid particle with the result that some fluidflows therepast through the orifice and tends to wash the particle toone side. 'Also, by reason of the convex bottom of the cup beingdirected toward the oncoming flow, the solid particles tend to slidearound the bottom away from the orifice.

While I have here shown and described my invention in the best form asnow knownto me, it is obvious that structural changes may be madewithout departing from the spirit of the invention, and I, therefore, donot desire to be limited intersecting in a plane outwardlyremoved-fromthe innermost part of said end.

2. A liquid discharge nozzle including a cupshaped member open acrossthe outlet end, convexly protruding at the inlet end, and having atriangular orifice in the convex inlet end centrally located thereof.

3. An irrigating pipe line side outlet nozzle comprising a cup shapedmember having a convex inner end presented toward water in the line andan outlet orifice centrally located in said end through which orificethe water may escape from the line at right angles to the flow throughthe line, said orifice having three sides;int'ersecting ina planeoutwardly removed from the innermost part of said end, and a cylindricalbody supporting said member therein to have said end spaced outwardlyslightly from the inlet end of the? body.

' RAYMOND P. PARADISE.

